In Lin Feng's memory, Mega Evolution was first discovered in the Kalos region and gradually spread to other regions.
Undoubtedly, Kalos had yet to establish a clear framework for Mega Evolution. Lin Feng would not recklessly announce this news in the East Hua region. Perhaps, at this very moment, Professor Platane was carefully studying Mega Evolution in Kalos.
Its principle relied on the deep bond between Trainer and Pokémon, using various Key Stones and Mega Stones to trigger a temporary evolution, granting Pokémon extraordinary power.
However, a very few Pokémon could Mega Evolve without meeting these conditions.
For instance, Rayquaza.
It did not require a Trainer to Mega Evolve, yet it could still defeat Primal Groudon and Primal Kyogre.
Lin Feng knew all this.
But Mewtwo's Mega Evolution truly puzzled him.
He vaguely recalled a scene where Mewtwo was battling someone and had spontaneously Mega Evolved. Furthermore, in the movie Genesect and the Legend Awakened, Mewtwo, seeking to surpass its limits, had flown into space and transformed into Mega Evolution Y form.
Yet many games clearly stated that Mewtwo possessed both X and Y Stones. Could both forms be possible?
Mewtwo looked at Lin Feng suspiciously. If it weren't for the "all-knowing" impression Lin Feng had left before, it might have thought this "Mega Evolution" was a trick to deceive it. After all, it had previously been with Team Rocket, who had once conducted research on Pokémon evolution.
Almost all Pokémon had their genetics fixed upon evolution, making further alterations nearly impossible.
Seeing Mewtwo's wary expression, Lin Feng explained, "It's not that I don't know, it's just that your Mega Evolution method isn't entirely clear."
"Don't worry, just follow me."
Lin Feng did not attempt to explain everything at once. No explanation could match seeing it with one's own eyes.
He happened to have a set of Gardevoir's Key Stone and Mega Stone. Why not try it now? Besides, he was curious to see Gardevoir's Mega Evolution form.
He brought Mewtwo, still skeptical, to Gardevoir and explained the purpose of their visit.
"Gardevoir?" (Mega Evolution?) Gardevoir rarely showed surprise, but now it looked at Lin Feng with curiosity. It had never heard of it before.
When it was young, the final forms it had seen in its group were only Gardevoir and Gallade.
It hesitated a moment before asking, "Gardevoir?" (Do you mean Gallade? That's the male in our team…)
Lin Feng waved his hand, clarifying, "No, no. This is about your Mega Evolution. It's an evolution beyond normal evolution. We need to try it together."
"Gardevoir…" Gardevoir was confused. It felt fantastical, yet it smiled and nodded. "Gardevoir." (Alright, let's give it a try.)
"Come on, let's try it in the sky."
Hearing Gardevoir agree, Lin Feng became excited. With Teleport, they quickly appeared above the nursery himself and the two Pokémon.
"Take this."
Lin Feng took out Gardevoir's Mega Stone from its Pokéball and handed it to her.
"Gardevoir…"
Lin Feng then personally took out his Key Stone. The stone had long been embedded in a special glove.
He placed the stone on his hand, looking seriously at Gardevoir. "When I touch this stone, you must respond to my call, alright?"
"Gardevoir."
Gardevoir looked at him gently. "Gardevoir~" (Even without it, I will respond whenever you call.)
Lin Feng felt a shiver down his spine. True to its nature, Gardevoir's words, uttered so naturally, broke through his composure.
He took a deep breath and steadied himself.
Most Mega Evolutions were not completed solely by the Pokémon they required an absolute bond with the Trainer.
It sounded mysterious, but if framed as psychic resonance, it was easier to understand. Since Lin Feng had taken her in, Gardevoir had tirelessly assisted in the nursery, never complaining about her duties, never expressing her needs or desires.
He had long wanted to ask Gardevoir about her wishes, but whenever he stood before her, he could not bring himself to ask.
Now, this attempt at Mega Evolution would allow him to understand her heart.
With determination, Lin Feng gently touched the Key Stone in his hand.
At that instant, a dazzling light flashed between the Key Stone and the Mega Stone, enveloping Gardevoir entirely.
Bathed in the brilliant white glow, her figure stretched and shifted. Due to the Mega Evolution, her height, previously around 1.6 meters, now clearly surpassed Lin Feng.
Her flowing dress became longer and fuller under the light.
When the light faded, her formerly white outer dress with a blue inner layer had transformed into a long, elegant black gown, voluminous like an evening dress.
Her previously blue hands appeared gloved in black, covering from her palms to her shoulders.
As the black gown swayed, glimpses of pure white legs could be seen beneath.
Her head retained the signature fin-like "ears" of Gardevoir.
"Gardevoir?"
Looking at her completely transformed appearance, Gardevoir's eyes widened with surprise, then turned toward Lin Feng.
She spoke softly, "Gardevoir?" (Do you understand now?)
Lin Feng nodded wordlessly.
She floated beside him, gently touching his head.
"Gardevoir~" (Don't overthink. Most of my happiness in life comes from here and from you, and that's enough for me.)
Then her tone shifted, glancing down at herself. "Gardevoir…" (I didn't expect this Mega Evolution to actually succeed.)